Valve assembly



Patented Aug. 24, 1943 3,327,600" vALvE ASSEMBLY H Louis Kennon,Houston, Tex. Application March29, 194i, Sela-l nmssasir olaim. '(cigzsiio V This invention relates to a valvejasse mbly.

-An object of theinvention is toiprovide ant assembly of the characterdescribed which 'emf bodies a novel type of valve which is soconstruct'ed as to ofi er a minimum of resistance to the liquid uponopening movement'ofthe valve.

Another objector the inventionfis' to provide,

in an assembly of the characterf described, a 1

valve'having two annular tapering faces, one of said faces beingtaperedtofit'thevalve seat and the other face being tapered so as tominimize upon the resistance of the liquid to the valve opening movementof the valve.

Another'novel feature resides in the provision of a valve' having twosimilarinterchangeableparts softhat'should one of the parts become Wornthe two parts may be interchanged, orr'eversed, thus in'efiect'providing a new valve.

A further feature of theinvention resides in a valve of .the 'characterdescribed having a reenforcing wear plate between the interchange-.'

. rial. These are fitted over the reduced lower end ofthe stem andbetween them there is a circular metal plate IU of a transverse diameteri notless than the maximum transverse diameter of the discs 1 :There arethe thin circular clamp plates II, I2 fitted ontothe stems on oppositesides of the respective ,valve discs 8 andl9, as shown'in Figr ure 1.The plate 1 I abuts the enlarged section 7" of. the stem and thefreeflend of the stem is threaded to receive a clamp nut I3 which clampsthe plate !2 between it ,andthe disc 9.

There is a coil spring 1; surroundingthe stem '6 and'interposed betweenthescage and the plate I I and .whichnormally urges the valve towardclosed position. This spring I4 may be dispensed V with as indicated inFigure 2;

able parts whichserves' to reenforce said parts as well as to minimizeWear on themarginof the valve clue to friction with the valve cage.

With the above and otherv objects in view the.

invention has particular relation to certain nov el features ofconstruction, arrangement ofparts' and use, examples of which are. givenin this ing drawing, wherein:

specification and illustrated in the accompanya 'Figure 1 shows'avertical sec fonal View of'the assembly. 1

Figure 2 shows a plan-view coil spring dispensed with;

Figure'3 shows a other embodiment, and t i Figure 4 shows'a verticalsectional view of' still another embodiment.

Referring'now more particularly tothedrawing wherein like numerals ofreference designate the same parts in each of the figures, the numeral Idesignates a tubular valve seat ,whichzmay be fitted through an openingin a support 2 such as a pump partition. One end'of'. the seat I isformed with ajflared seating face 3 on which the valve seats whenclosed.

Screwed onto the valve seatl there isa valv I cage 4 having a bearingE'Which is co-axial with theseat. A valve stem 6 works in the bearing 5and is formed with an enlarged polygonal section I, formed integrallytherewith and beneath which-the stem is reduced in diameter.

In the form shown in Figure 1 thereare two similar valve discs 8 and 9formed of hard rub-' her or other relatively hard compositionmatevertical sectional view ofan-x Thevalve discs 8 and 9 are similarinsize and shape :having annular tapering faces I5, I6. These facesconverge upwardlyand downwardly, V respectively; towards theaxis of thestem. The

face I6 corresponds in taper to the taper of the seating facel3 and fitsclosely thereon when the valve isiclosed. The face I5 will minimize theresistance of the liquid upon opening movement of the valve,.theassembly, in that respect, acting similar to a ball yalve. The metalplate between the. composition valve discs 8 and 9 will take the thereofthe wear incident {to the friction of the valve'with the cage thusminimizing the wear on the margin of the composition valve discs.

The disc 9 which seats against the valve seat will be held very firm andunyielding by. said reenforcing' plate I 0.

' In the embodiment illustrated in Figure 3 the valve discs 8 9 areformed of metal and hence the reenforcing'plates II and I2 are dispensedwithin this embodiment. In thelembodiment illustrated in Figure 4, thevalve discs 81) and 9b are formed of metal and are somewhat thicker thanthe corresponding discs shown in Figure 3 and reenforcing plate ii] isdispensed with. 'In

"all respectsthan those abovenoted the forms. shown inFigures 3 and 4are the same as that shown in Figure 1.

changeable; thatis, when the disc contacting with the valve seat becomesworn or develops a j merely while the broad principle of the inventionaleak, the two discs maybeinterchanged and the 50 I valve thus ineffectrenewed. v

I The drawing and description are illustrative will be defined by What Iclaim is: V v e In a valve assembly having a tapering seat and theappended claim.

In each ofthe forms the valvediscs are intervalve cage having valveguiding surfaces, a valve composed of a metal plate, two similar discson Iopposite sides of the plate and iormed-of hard composition material,said discs and plate bein of ethersavme transversediameter, so that themetal platewill contact the guidingjsurfaces of the cagelto protect themargins of the discs from' 'weannmeans including a stem for clamping theto selectively fit said tapering seat.

' LOUIS H; KENNOVNVE

